The main power switch is on the left side of the machine. When this switch is turned on, the main power turns on and the main power indicator on the right side of the control panel lights up. When this switch is turned off, the main power turns off and the main power indicator on the right side of the control panel goes out.
This machine automatically enters Fusing Unit Off mode or Sleep mode if you do not use it for a while. For details, see Saving Energy.